In its concentrated form (undiluted), RODEO (53.8% glyphosate) and its counterparts AQUAMASTER, AQUAPRO, AQUANEAT, GLYFOS AQUATIC, etc. etc. should have a very stable shelf life for several years, provided they are kept in their original and well-sealed containers.
If diluted with water, their stability decreases very rapidly (unless it is very "pure" water).


Kelly Duffie
Cypress, TX